chore: add redirect from api-server to backend

Author: shellmayr

redirects.js

@@ -114,6 +114,10 @@ const developerDocsRedirects = [
     source: '/application/api/:path*',
     destination: '/backend/api/:path*',
   },
+  {
+    source: '/api-server/:path*',
+    destination: '/backend/:path*'
+  },
   {
     source: '/application/serializers/',
     destination: '/backend/serializers/',